Insects in Great Britain . 
569 
As the flowers of the classes under consideration set them- 
selves apart almost completely for the larger Apidae, we give 
here the seasonal distribution of these bees : — 
TABLE XXX. 
Seasonal distribution of Bees. The sequence is the sequence of their 
tongue-lengths. 
Name. 
Spring (23 days). 
Summer (88). 
Autumn (12). 
Total. 
Bombus hortorum 
3 
12 
_ 
15 
B. agrorum .... 
5 
49 
44 
98 
B. venustus .... 
— 
9 
— 
9 
B. smithianus . . . 
— 
1 
1 
B. cognatus . . . 
— 
— 
2 
2 
B. lapidarius . , . 
3 
— 
3 
6 
B. lapponicus, with \ 
B. pratorum . . 
B. jonellus, and . ( 
182 
163 
1 1 
356 
B. scrimshiranus . ) 
Psithyrus quadricolor 
— 
10 
1 
11 
Bombus terrestris . . 
77 
76 
240 
393 
Bombi (unidentified) 
2 
43 
1 
46 
Apis mellifica . . . 
160 
266 
4 
430 
Total .... 
432 
628 
3°7 
1367 
We may class these bees by their tongue-lengths : Bombus 
hortorum to B. cognatus first, B. lapidarius and B. lapponicus 
second, Psithyrus quadricolor and Bombus terrestris third, 
and Apis last. 
TABLE XXXI. 
Bees in season by their tongue-lengths. 
Spring. 
Summer. 
Autumn. 
Percentage 
Percentage 
Percentage 
No. 
of total 
No. 
of total 
No. 
of total 
insects. 
insects. 
insects. 
Tongue 15 mm. and over . 
8 
.19 
70 
.72 
47 
I.41 
Tongue 10-15 mm. long . 
185 
4.41 
163 
I.67 
H 
.42 
Tongue 7-10 mm. long . . 
77 
I.83 
86 
.88 
241 
7* 2 5 
Tongue 6 mm. long . . . 
160 
3-8 i 
'V 
266 
2.72 
4 
.01 
